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Engine / Transmission Components - Porsche

JB Racing is proud to offer an array of high-quality
custom engine & drive train components designed to improve
both the performance and reliability of Porsche 6-cyl. air-cooled
engines. Experience gained during many years of building high-performance
racing engines has led to the development of a variety of engine
products, such as our Aluminum Fin-Iron Sleeve Cylinders, Piston
and Rod combinations, Solid Timing Chain Tensioners, Adjustable
Camshaft Sprockets, Billet Twin-Plug Distributors, Custom Fittings,
Valve Train components and more...

Aluminum Fin-Steel Sleeve Cylinders

Our aluminum fin-steel sleeve cylinders are now available in
many bore sizes and cylinder head configurations to suit most
Porsche 6-cyl. air-cooled competition engine requirements. These
beautifully finished cylinders are CNC machined in-house from
billet aluminum and feature additional fins and fin surface area
to provide the added cooling capacity desired for all racing applications.
The steel sleeves provide enhanced performance by maintaining
a more rigid and consistent bore shape, thus improving ring seal
and reducing "blow-by". These cylinders are now available
outright without any core exchange requirements.

Our cylinder line includes bore sizes ranging from 80.0 to 102.0mm.
Should you have special requirements, please call for assistance.
We can manufacture custom cylinders upon request.

PN 131-200
Cylinder Set

Cylinder w/ Fitted
Custom JE Piston

Cylinder Size(s)

Engine Size

Cylinder Head

Engine Case

Case Spigot Size

Part Number

Price Per Set (6)

Bore range 80.0 - 84.0mm

2.0L

2.0L

Aluminum/ Magnesium

92.0 Slip-in

131-200-6

$3,000.00

Bore range 80.0 - 84.0mm

2.0 thru 2.4L

2.2 - 2.7L

Aluminum/ Magnesium

92.0 Slip-in

131-202-6

$3,000.00

Bore range 84.0 - 90.0mm

2.4 thru 2.7L

2.4 - 2.7L

Aluminum/
7R Magnesium

97.0 Slip-in

131-204-6

$3,000.00

Bore range 90.0 - 93.0mm

2.7 thru 2.9L

2.7L

Aluminum/
7R Magnesium

98.5 Custom

131-206-6

$3,000.00

Bore range 93.0 - 95.0mm

3.0 thru 3.2L

3.0 - 3.3L

3.0 Liter

103.0 Slip-in

131-208-6

$3,000.00

Bore range 95.0 - 98.0mm

3.0L

3.0 - 3.3L

3.0 Liter

105.0 Custom

131-210-6

$3,000.00

Bore range 98.0 - 100.0mm

3.2L

3.0 - 3.3L

3.0 Liter

105.0, 107.0 Custom

131-212-6

$3,000.00

Bore range 98.0 - 100.0mm

3.6L

3.6L

3.6 Liter 964 Case

107.0 Slip-in

131-214-6

$3,150.00

Bore range 100.0 - 102.0mm

3.8L

3.6 - 3.8L

3.6 Liter 964 Case

109.0 Custom

131-216-6

$3,150.00

Notes:

Cylinders are designed with maximum wall thickness therefore
some cylinders will require case modifications

Cylinders are available in complete sets (as listed above) or
on an individual basis as required.

All cylinder PN's 131-200 thru 131-212 are machined using the
3.0 Liter fin configuration and require the use of 3.0L sheet
metal baffling.

All dimensions are metric

Carbon Fiber Engine Shroud Kit

Our original Carbon
Fiber engine shroud kit was designed specifically for Porsche
911 air-cooled race engines that utilize the factory spin-on
oil filter console. Now a street engine version is available
which contains ductwork provisions for the factory oil cooler
used in most street driven vehicles.. Each Kit consists of
five (5) pieces and is sold only in complete sets. An OPTIONAL
Left-Rear cover, PN 131-289 contains heater duct provisions,
is also now available. This cover has adequate clearance for
our 12-pin distributors.

Please note the
following as some final fitment/finishing will be necessary
due to variances in installation requirements.

Intake port holes basic shape are precut and must be
trimmed to final size

Holes must be drilled for attachment locations and accessories

Outside dimensions of the shroud and parts are a very
close fit therefore some minor fitting and trimming will
be necessary.

Description

Application(s)

Part Number

Price

Carbon Fiber Race Engine Shroud Set

911 Air-Cooled "Race" Engines (note)

131-280-5

Call

Carbon Fiber Street Engine Shroud Set

911 Air-Cooled "Street" Engines (note)

131-286-5

Call

Carbon Fiber LR Cover w/ Heater Duct Prov.

911 Air-Cooled Street/Race Engines (note)

131-289

Call

Note:

Fits all except 964. A kit for the 964 application
is under development - please call.for pricing and availability.

Used with 131-020 & 131-025 Adjustable Cam Sprocket kits
when installed with Late Model (1978-98) "bolt-drive"
cams. Required only if factory bolts & washers are not available
- factory bolt & washer may be used.

Required for installation of Adjustable Cam Sprockets with
Early Model (1977 and earlier) "nut-drive" cams. (1978
was a transition year and both cam types were used)

Engine Fittings

PN 131-003
Sensor Port Plug

PN 131-004
Oil Inlet Adapter Kit

PN 131-094
Oil Outlet Fitting

PN 131-030
Cam Housing Oil Fittings

PN 131-031
Oil Temp. Block "Banjo" Fittings

PN 131-032
Engine Case "Banjo" Bolts

PN 131-003
Sensor Port Plug - Installed

PN 131-004
Oil Inlet Adapter - Installed

PN 131-005
Reverse Light Switch Plugs

PN 131-035
Oil Pressure Adapter Fittings

PN 131-036
Oil Thermostat By-Pass Adapter

PN 131-037
Crankcase Breather (AN-16)

Description

Application

Part Number

Price

Oil Inlet Adapter Kit (Aluminum), AN-16 - w/ studs & hardware

All 911 Engines

131-004

$97.50

Oil Inlet Adapter Kit (Aluminum, AN-12 - w/ studs & hardware

All 911 Engines

131-093

$97.50

Oil Outlet Adapter Fitting, AN-16

All 911 Engines

131-094

$48.00

Sensor Port Plug (Aluminum), 14.0mm x 1.5mm x 19mm Hex

All 911 Engines

131-003

$ 6.75

Reverse Light Switch Plug, 18.0mm x 1.5mm x 25mm Hex

All 911 Engines

131-005

$ 9.75

Cam Housing Oil Fitting, 12.0mm x 1.0mm x AN-6

All 911 Engines

131-030

$24.75

Oil Temperature Block "Banjo" Fitting, 12.0mm x 1.0mm x AN-6

All 911 Engines

131-031

$29.85

Eng. Case "Banjo" Bolt, 12.0mm x 1.0mm x 19mm Hex

All 911 Engines

131-032

$24.75

Aluminum Plug, 12.0mm x 1.0mm x 19mm Hex

All 911 Engines

131-033

$ 6.75

Aluminum Plug, 12.0mm x 1.5mm x 19mm Hex

All 911 Engines

131-034

$ 6.75

Oil Pressure Adapter, 18.0mm x 1.5mm x 1/8 FPT x 25mm Hex

All 911 Engines

131-035

$14.25

RSR Oil Thermostat By-Pass Adapter - NEW

All 911 Engines

131-036

$165.00

Crankcase Breather (AN-16) - NEW

All 911 Engines

131-037

$165.00

Alternator/Fan Pulley Washer, 16mm dia. shaft (See note 1)

All 911 Engines

131-010

$18.75

Alternator/Fan Pulley Washer, 17mm dia. shaft (See note 1)

All 911 Engines

131-011

$18.75

Notes:

General Note- Aluminum plugs listed above may also fit other applications

Replacements for OEM Alternator/Fan Pulley Washers which are
no-longer-available from Porsche

Ignition Components
Single and Twin-Plug Distributors for Porsche 911

We now offer both Single-Plug (6-Pin) and Twin-Plug (12-Pin)
Distributors for Porsche 911 based engines are in two configurations.
One contains internal ignition triggering with an adjustable (+28
degrees) advance curve while the other is designed specifically
for crank-triggered ignition systems. All distributor housings
are one-piece; CNC machined from billet aluminum and incorporate
ball bearings, bronze bushings and internal shaft seals. Distributors
are available in both small and large diameter housings for use
in early and late model engine cases. These new distributors are
supported with an array of auxiliary components to complete and
enhance your installation. (see Tech Info
for installation information)

Lg (30mm)

Sm (25.15mm)

Lg (25.75mm)

Valve Train - Springs - Retainers

JB Racing has developed performance valve springs and steel
valve spring retainers necessary to maintain critical valve
train integrity in high revving Porsche 6 cylinder air-cooled
engines. We use these super-strong steel retainers in all or
our endurance racing engines for their reliability. These retainers
are custom designed for use with OEM 7° valve stem locks
and our Dual Valve Springs. All Retainers and Spring Cups are
machined with generous radii in the appropriate locations for
additional strength and are heat treated for strength and durability.

Our Dual Valve Springs are designed to be installed using JBR
Steel Retainers and Valve Spring Cups. Springs are supplied
already detailed and prepped for installation. These springs
are rated as follows: 95 lbs/seat pressure at an installed height
of 1.600" and provide 280 lbs./open pressure at .500"
lift.

PN 131-070-12
Valve Spring Set

Spring set w/ Retainers
and Spring Cups

Description

Application

Part Number

Price

Valve Spring Cup Set (12) (See notes)

All 911 Engines

131-050-12

$150.00

Steel Valve Spring Retainer Set (12) - 9mm V. stem

All 964 & earlier Engines

131-060-12

$191.25

Steel Valve Spring Retainer Set (12) - 8mm V. stem

All 911 Engines

131-062-12

$191.25

Competition Valve Spring Set (12) (See notes)

All 911 Engines

131-070-12

$252.00

Notes:

JBR spring cups and valve springs may be installed on OEM cylinder
heads without any modifications. OEM valve spring shims and valve
seals may also be used.

Valve Springs require use of JBR Spring Cups PN 131-050-12.
Springs will not fit in the OEM spring cups.

Transmission

This custom designed & manufactured billet aluminum bearing
plate replaces the weak OEM Porsche cast intermediate bearing
plate used in the 901 / 911 / 914 transmissions. The stock bearing
plate has a tendency to deform under high horsepower loads which
often leads to transmission failure.

PN 157-001*

Description

Application

Part Number

Price

Billet Aluminum Intermediate Bearing Plate

901 / 911 / 914 Transmissions

157-001 *

$390.00

---Please Note--- Item is temporarily
out of production – please call/check availability